If you need to get a new drivers license or plates in October, plan ahead, because all the DMV offices will shut for several days – including online services – to install new software, and work may be slow for a while after the transition.

The New Hampshire Department of Safety says the offices will be shut on Monday and Tuesday, Oct. 9 and 10. Town and city clerks will not be able to process the state portion of vehicle registrations from Friday, Oct. 6, through the following Monday and Tuesday. Online service, including online ticket paying, will be shut down even longer, from Wednesday, Oct. 4 through Wednesday, Oct. 11.

Paying tickets by phone will not be available on Monday and Tuesday, Oct. 9 and 10.

The system’s current software was “originally implemented in the 1980s,” said the department in a press release.